Improve issue templates (#6345)

* Redirect installation issues to Discourse

* Remove required reference to documentation on template issue

* Remove required reference to discussion on feature request template

* Fix automatic labels in issue templates

* Add free form developer issue template

Author: ricardoV94

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -6,7 +6,7 @@
 name: Bug report
 description: Report a bug. For security vulnerabilities see Report a security vulnerability in the templates.
 title: "BUG: <Please write a comprehensive title after the 'BUG: ' prefix>"
-labels: [defects]
+labels: [bug]
 
 body:
 - type: markdown

.github/ISSUE_TEMPLATE/config.yml

@@ -2,7 +2,7 @@ blank_issues_enabled: false
 contact_links:
   - name: PyMC Discourse
     url: https://discourse.pymc.io/
-    about: Ask usage questions about PyMC/PyMC3
+    about: Ask installation and usage questions about PyMC/PyMC3
   - name: Example notebook error report
     url: https://github.com/pymc-devs/pymc-examples/issues
     about: Please report errors or desired extensions to the tutorials and examples here.

.github/ISSUE_TEMPLATE/developer.yml

@@ -0,0 +1,5 @@
+name: Developer issue
+description: This template is for developers only!
+
+body:
+- type: textarea

.github/ISSUE_TEMPLATE/documentation.yml

@@ -18,8 +18,6 @@ body:
       referring to. You can also check the development version of the
       documentation and see if this issue has already been addressed at
       https://www.pymc.io/projects/docs/en/latest/api.html.
-  validations:
-    required: true
 
 - type: textarea
   attributes:

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -6,7 +6,7 @@
 name: Feature request
 description: Make a specific, well-motivated proposal for a feature.
 title: "ENH: <Please write a comprehensive title after the 'ENH: ' prefix>"
-labels: [enhancements]
+labels: [feature request]
 
 
 body:
@@ -21,15 +21,6 @@ body:
       Check the [Contributor Guide](https://github.com/pymc-devs/pymc/blob/main/CONTRIBUTING.md)
       if you need more information.
 
-- type: textarea
-  attributes:
-    label: "Link to a discussion"
-    description: >
-      Link to the discussion about this feature request in
-      [Discussions](https://github.com/pymc-devs/pymc/discussions)
-  validations:
-    required: true
-
 - type: textarea
   attributes:
     label: "Before"